Researchers at the University of Washington have discovered a hormonal link between nutrition and reproduction, with leptin serving as a metabolic signal to the reproductive system. The study provides an explanation for how the body's energy stores determine reproductive readiness.
A study by the University of Illinois Chicago found that most day-care centers have no policy or procedures for systematically protecting children from sunburn. On average, only 2.5 bottles of sunscreen were available per 104 children, with 95% not wearing hats and 26% without shirts.
Researchers found that some algal cells can grow and survive in near-normal conditions without Photosystem I, a key component of traditional photosynthesis. This discovery may challenge our understanding of plant biology and suggest new avenues for studying photosynthesis.